Drain valve for an air cleaner



April 26, 1955 D. J. PEEPS 2,707,000 DRAIN VALVE FOR AN AIR CLEANER Original Filed Dec. 28, 1951 IN VEN 7 0R. 1701mm J. FELIPE.

,threaded at its top portion to United States Patent Ofitice 2,707,000 Patented Apr. 26, 1955 2,707,000 DRAIN VALVE FOR AN AIR CLEANER Donald J. Peeps, Toledo, Ohio, assignor to The De Vilbiss Company, Toledo, Ohio, a corporation of Ohio Original application December 28, 1951,

, now Patent No. 2,692,655, dated October 26, 1954. Divided and this application June 17, 1954, Serial No. 437,525

3 Claims. (Cl. 137 590 compressed air be oil and d rt particles.

the provision of easily manipulated drain valve means for the discharge of accumulated water.

feature of the invention contributing to the accomplishment of the objects is the non-rotating axial move ment of the valve.

Other objects and advantages will become the readi g of the following description given the accompanying drawings.

In the drawings:

Figure 1 is a vertical section of an air cleaner embodying my invention; and

Figure 2 is an enlarged vertical section of the drain valve components.

As shown in the drawings the air cleaner here presented includes a head member 1 formed from a casting. pending from the head member is a tubular casting 2 on the lower end of which is a closure cap and valve casing 3.

concentrically positioned within the casing 2 is tubular partitioning member 4 and within the latter is the filter apparent with with reference in any desired location.

There is an air inlet passage 9 in the head which is the head port 11 and slopes downtinues its spiral travel past a second bafliing flange projecting outwardly from the lower end of the partitioning member 4.

Beneath flange 15 the air expands in space 16 as it turns upwardly to against the inner surface of the The expansion of the air in entrained particles. posited upon the valve casing 3 and is joined there by particles precipitated of the air in space 16.

For t e purpose of strengthening the cap casting 3 there are vertical webs 17 between its periphery and the center post 18. Adjacent the post in the lower portion of the webs are apertures 19 which permit accumulated liquid to pass freely through the webs around the post.

pending below the cap 3. Through the base of cation b the drain valve annular groove To prevent leakage of water along the outside of the valve stem an O-rmg packing 5113 he cylinder 5 is held in place against the inwardly flanged upper end of member 4 by a retaining disc 36 which also closes the lower end of the cylinder. The disc in turn is supported by split ring 37 mounted in a groove in tie rod head, when the rod is threadedly engaged by nut 7 and cap 3. As the opening in the underside of the head 1 below chamber 38 is non-circular it is necessary to insert a ring 41 between the member 4 and the head to seal the air entering space between casing 1 and member 4 from the outlet chamber 38.

As may be perceived the discharge of accumulated water is easily handled with the slidable drain valve, and whether the valve is in opened or closed position may be quickly observed. The limited contact of the valve assembly 24 with the bore 20 assures easy manipulation and lessens the likelihood of binding due to corrosion, a common occurrence with threaded drain valves. The valve arrangement uses the pressure of the air to help hold the valve closed.

It should be understood that this invention is not limited to any specific construction as it is capable of embodiment in various forms within the spirit of the claims.

What I claim is:

1. In a liquid drain valve, a casing having an axial bore with an inlet at its upper end and open at its lower end, a reciprocable valve and an integral depending tubular valve stem in the bore, means providing an upwardly facing annular valve seat in the bore below the inlet, the tubular valve stem lateral passage into its interior and having its lower end having at its upper end below the valve a 2 of the bore and open for the discharge of liquid, a centrally-ported hand knob on the exterior pormanual raising and lowering the valve seat, stop means valve, a compressed ring mounted on the valve stem, a shoulder in the bore over which the compressed ring expands at the upward limit of the valve movement.

2. A drain valve according to claim 1 in which the stop means comprises a cylindrical boss on the lower side of the casing over which a complementary socket of the hand knob fits, the telescoping of the two parts also serving as a longitudinal protective guide for the valve stem.

3. A drain valve according to claim 1 in which there is an Oring packing carried in a groove on the valve stem to seal between the stem and the bore.

References Cited in the file of this patent UNITED STATES PATENTS 

